Pushed to the extreme, where a single person could create an oscar-worthy advertisement in seconds, it doesn't suddenly mean that the superbowl will charge pennies for an ad slot.
I suspect the end state will be just-in-time rich ad creation (not bidding) tailored specifically to you.
For a superbowl ad, there's the high cost to air the spot, but most of them also have a high cost to produce the spot (maybe not for the the one from last year that was just a dvd logo esque bouncing qr code for a crypto scam); if your marketing budget was ~ $5M, maybe you spent $1M on production and $4M on airtime. If AI gives you a good enough result for approximately no money, maybe you spend all that budget on airtime, maybe you cut the budget and still spend $4.5M on airtime. Of course, if everybody is spending more on airtime, you might not get more airtime, but you could still reduce/eliminate the production part of the budget.
One could imagine that once every company in a market uses AI videos to reduce said costs they will then have to spend even more to stand out from the other marketers, leaving us all back where we started, but with a lot of crappy AI videos to wade through.
With media though, I feel it's a lot worse. It's already been trending that way for text with blogspam already diluting the value of the web even before AI. But with AI this is accelerating to video and audio as well. Not only does the AI slop drown out the best of human creativity, it also raises the floor on superficial production value so that if you don't use AI you fall behind on the initial attention-grabbing first impression. I acknowledge a big part of this is due to where we are in the hype cycle, and once we absorb the capabilities of the tools, we'll figure out how to use them more tastefully, and human creativity will shine through again. But no I don't think always making everything easier and more efficient is necessarily always a good thing a priori. Friction and effort sometimes leads to positive outcomes.
I care how expensive ram and gpus are though and this ain't helping.
Prices won't go down. Profits go up. The winners are the shareholders.
The end game is quite sad, which will be some kind of neural device which just directly manipulates brain signals for happiness, and everything physical will be just gray goo. It's more scalable to make you think the world is beautiful, than to actually make it beautiful. We are almost there already, because we experience the world through a screen, which shows us happy things, while we care less and less about the real world around us.